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EPC9094
EPC – POWER CONVERSION TECHNOLOGY LEADER | EPC-CO.COM | ©2021 | | 11
Figure 15: Main schematic
Logic Supply
10-15 VDC
i
Net Class
ClassName: HighVoltageGate
Intermediate Capacitors
V INV IN V IN V IN V IN V IN VI N V IN V IN V IN
Gate Driver
GND
VSW
V dd12
GND
V dd12
GND
V dd12
SW Output
Main Supply Input
GND
VCC
5 V
GND
V CC
V 1
AP1006_Rev2_01_12Vto5VlinPSU.SCHDOC
GND
Heatspreader Mount
V IN
V SW
V IN
V INV IN
V INV IN
V INV IN
V SW
V SWV SW
V SWV SW
V SWV SW
FD1
PC
FD2
PC
FD3
PCB Fiducial
1 2
3
5
7
4
6
8
Amphenol
67997-272HL F
J3A
17 18
19
21
23
20
22
24
Bottom Side install
Bottom Side install
Bottom Side install
J3C
9 10
11
13
15
12
14
16
J3B
1
2
100 mil TH
100 mil TH
100 mil TH
J90
0603
0 Ω 0.1W
R90
0603
1 μF 25 V
C11
Sync Buck Output
V OUT
Power Stage
V SW
V IN V IN
V SW
Switch-node
V OUT
SMD MMCX
J32
EMPT Y
TB D
L 1
EMPT Y
TB D
Cout
EMPT Y
1
2
7.62 mm T H
J9
EMPT Y
SMD T P
K eystone5015
TP2
SMD T P
Keystone5015
TP4
SMD T P
Keystone5015
TP3SMD T P
Keystone5015
TP1
1
2
Hole 100mil 1 row, 2 pos.
J33
V SW
Upper Gate
SMD MMCX
J1
EMPT Y
0402
0 Ω 1/16 W
R11
EMPT Y
V Gl
Lower Gate
SMD MMCX
J2
EMPT Y
0402
R22
EMPT Y
1
2
Hole 100mil 1 row, 2 pos.
J22
PWM1
PWM2
GND
V CC
In1
In2
Qup
Qlow
DT
AP1010_Rev3_02_GeneralDeadtime.SCHDOC
PWM1
PWM2
L IN
HI N
Dead-time and buers
GND GND
V CC
GND
Signal Inputs
1
2
3
4
J80
5 V Logic Regulator
GND
Vdd12
PWMH
PWML
VSW
VGuH
VGlH
VGuL
VGlLEN
GNDP
GD
P1029_Rev2_0_NCP51820_GateDriver.SCHDOC
EN
EN
GNDP
V IN
VGuH
VGlH
SW
VGuL
VGlL
VGu
VGl
PS
EPC9094_Rev1_0_PhaseLeg.SCHDOC
V Gu
VGl
V Gu
9774010243R
Spacer M2 1 mm Spacer M2 1 mm Spacer M2 1 mm
SO1
9774010243R
SO2
9774010243R
SO3
1210
150 nF 500 V
Cm1
1210
150 nF 500 V
Cm2
1210
150 nF 500 V
Cm3
1210
150 nF 500 V
Cm4
1210
150 nF 500 V
Cm5
1210
150 nF 500 V
Cm6
1210
150nF 500V
Cm7
1210
150 nF 500 V
Cm8
1210
150 nF 500 V
Cm9
1210
150 nF 500 V
Cm10
0402
0 Ω 1/16 W
0 Ω 1/16 W
R85
GNDPGND
Ground Connect
GND
1
2
J81
EMPT Y
GNDP GNDP GNDP
GNDP
GNDP GNDP
GNDP GNDP
GNDP
GNDP GNDP
GNDP
GNDP GNDP GNDP GNDP GNDP GNDP GNDP GNDP GNDP GNDP
GNDP
i Net Class
ClassName: HighVoltage
i
Net Class
ClassName: HighVoltage
i
Net Class
ClassName: HighVoltage
ATTENTION
ELECTROSTATIC
SENSITIVE DEVICE
ATTENTION
ELECTROSTATIC
SENSITIVE DEVICE
HIGH VOLTAGE
HIGH VOLTAGE
ATTENTION
HOT SURFACE
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EPC9094
EPC – POWER CONVERSION TECHNOLOGY LEADER | EPC-CO.COM | ©2021 | | 12
Figure 16: Power Stage schematic using EPC2054
Vin
GNDP
DC Input
160 Vmax.
V I N
HF Loop Capacitors
SBR1U400P1-7
400 V, 1 A
D1
EMPT Y
SBR1U400P1-7
400 V, 1 A
D2
EMPT Y
0805
22 nF 500 V
Ci3
0805
22 nF 500 V
Ci4
0805
22 nF 500 V
Ci5
0805
22 nF 500 V
Ci6
0805
22 nF 500 V
Ci7
0805
22 nF 500 V
Ci1
0805
22 nF 500 V
Ci2
V I N V I N V I N V I N V I N V I N VIN
i Net Class
ClassName: HighVoltage
Net Class
ClassName: HighVoltage
i
i
Net Class
ClassName: HighVoltageGate
Power Stage
SW
V I N
Optional Diodes
SW
V I N
VGlH
VGuH
VGu
VGl
VGlL
VGuL
VGl
VGu
0402
4.7 Ω 1/16 W
4.7 Ω 1/16 W
R80
0402
1 Ω
1 Ω
1/16 W
R81
0402
R82
0402
1/16 W
R83
200 V 32 mΩ 2.4 A
Q2
EPC2054
200 V 32 mΩ 2.4 A
Q1
EPC2054
GNDP GNDP GNDP GNDP GNDP GNDP GNDP
GNDPGNDP
GNDP